Asymptotes.
No matter how close they can get with each other,
They will never ever be together.

Parallel Lines.
No matter how much they cling and long for it,
They can do nothing about love if their hearts will never even meet.

Tangent lines.
No matter how hard they try to be with each other,
Their paths are only destined to meet at one point and be apart forever.

The thing about Math and Love is, they are both inclined
With complicated and painful situations.
But one good thing about them is,
In every problem, there would still be solutions.